Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Cotyledon> ?p ?o. }
Showing items 1 to 40 of
40
with 100 items per page.
- Cotyledon abstract "A cotyledon (/kɒtɨˈliːdən/; "seed leaf" from Greek: κοτυληδών kotylēdōn, gen.: κοτυληδόνος kotylēdonos, from κοτύλη kotýlē "cup, bowl") is a significant part of the embryo within the seed of a plant. Upon germination, the cotyledon may become the embryonic first leaves of a seedling. The number of cotyledons present is one characteristic used by botanists to classify the flowering plants (angiosperms). Species with one cotyledon are called monocotyledonous ("monocots"). Plants with two embryonic leaves are termed dicotyledonous ("dicots") and placed in the class Magnoliopsida.In the case of dicot seedlings whose cotyledons are photosynthetic, the cotyledons are functionally similar to leaves. However, true leaves and cotyledons are developmentally distinct. Cotyledons are formed during embryogenesis, along with the root and shoot meristems, and are therefore present in the seed prior to germination. True leaves, however, are formed post-embryonically (i.e. after germination) from the shoot apical meristem, which is responsible for generating subsequent aerial portions of the plant.The cotyledon of grasses and many other monocotyledons is a highly modified leaf composed of a scutellum and a coleoptile. The scutellum is a tissue within the seed that is specialized to absorb stored food from the adjacent endosperm. The coleoptile is a protective cap that covers the plumule (precursor to the stem and leaves of the plant).Gymnosperm seedlings also have cotyledons, and these are often variable in number (multicotyledonous), with from 2 to 24 cotyledons forming a whorl at the top of the hypocotyl (the embryonic stem) surrounding the plumule. Within each species, there is often still some variation in cotyledon numbers, e.g. Monterey Pine (Pinus radiata) seedlings have 5–9, and Jeffrey Pine (Pinus jeffreyi) 7–13 (Mirov 1967), but other species are more fixed, with e.g. Mediterranean Cypress always having just two cotyledons. The highest number reported is for Big-cone Pinyon (Pinus maximartinezii), with 24 (Farjon & Styles 1997).The cotyledons may be ephemeral, lasting only days after emergence, or persistent, enduring a year or more on the plant. The cotyledons contain (or in the case of gymnosperms and monocotyledons, have access to) the stored food reserves of the seed. As these reserves are used up, the cotyledons may turn green and begin photosynthesis, or may wither as the first true leaves take over food production for the seedling.".
- Cotyledon thumbnail Cotyledon-Cercis_siliquastrum.jpg?width=300.
- Cotyledon wikiPageExternalLink m0006930.html.
- Cotyledon wikiPageID "55623".
- Cotyledon wikiPageRevisionID "603054883".
- Cotyledon hasPhotoCollection Cotyledon.
- Cotyledon subject Category:Leaves.
- Cotyledon subject Category:Plant_anatomy.
- Cotyledon subject Category:Plant_morphology.
- Cotyledon subject Category:Plant_reproduction.
- Cotyledon comment "A cotyledon (/kɒtɨˈliːdən/; "seed leaf" from Greek: κοτυληδών kotylēdōn, gen.: κοτυληδόνος kotylēdonos, from κοτύλη kotýlē "cup, bowl") is a significant part of the embryo within the seed of a plant. Upon germination, the cotyledon may become the embryonic first leaves of a seedling. The number of cotyledons present is one characteristic used by botanists to classify the flowering plants (angiosperms). Species with one cotyledon are called monocotyledonous ("monocots").".
- Cotyledon label "Cotiledone".
- Cotyledon label "Cotiledón".
- Cotyledon label "Cotilédone".
- Cotyledon label "Cotyledon".
- Cotyledon label "Cotylédon".
- Cotyledon label "Kotyledone".
- Cotyledon label "Liścień".
- Cotyledon label "Zaadlob".
- Cotyledon label "Семядоля".
- Cotyledon label "子叶".
- Cotyledon label "子葉".
- Cotyledon sameAs Děložní_lístek.
- Cotyledon sameAs Kotyledone.
- Cotyledon sameAs Κοτυληδόνα.
- Cotyledon sameAs Cotiledón.
- Cotyledon sameAs Kotiledoi.
- Cotyledon sameAs Cotylédon.
- Cotyledon sameAs Kotiledon.
- Cotyledon sameAs Cotiledone.
- Cotyledon sameAs 子葉.
- Cotyledon sameAs Zaadlob.
- Cotyledon sameAs Liścień.
- Cotyledon sameAs Cotilédone.
- Cotyledon sameAs m.0fg48.
- Cotyledon sameAs Q193026.
- Cotyledon sameAs Q193026.
- Cotyledon wasDerivedFrom Cotyledon?oldid=603054883.
- Cotyledon depiction Cotyledon-Cercis_siliquastrum.jpg.
- Cotyledon isPrimaryTopicOf Cotyledon.